Vehicle air-spring.



1. s'. GREEN.

VEHICLE AIR SPRING. APPucAnoN mso 111511,14, 191

Patented Dec. 14, 1915.

/N VE N TOR 22 and out through the outlet 34 ofV said plungerintochamber a and will fall down through chamber a. filling the oilretaining chamber/"c formed by liange 18 und the to 16 of the retainer.The excess oil umpe will flow back into chamber b throu i annularopening28. As the leakage o oil past the cup leather will be slightif the cupleather properly fits the interior surface of cylinder 2, the amountwhich is discharged through drai-n 33 willv be sli ht vand the reservoirformed hy chamber will su ply the lfree ed e of the (cup leather pac' ng.with an oil ath foga long periodo! tune.-

patentstatutes, I havedescribed the principle of operation of myinvention together with the device which I nony consider to representthe best embodiment thereof, but I desire to .have itundestood that thedevice shown is only illustrative andn that the invention can be carriedout in other ways.

'What I claim is: e

1. In a fluid cushion device comprising relatively movable membershaving a slidin l joint .therebetween and forming a close chamber, apacking for the sliding joint, a

chamber above said packing for supplying the' vsame with sealing liquid,a 'sealing liqui reservoir,y and 'a pump for transferring liquid fromsaid reservoir to said chamber above said aching..

2. A tlui cushioning device comprisin relativelyv movable members havin'a slidg- 'ing 'oint vtherebetween Yand inc osing a i, apacking for theslidin joint, a A liquid receptacle for supplying sai packingwithsealing,lijq'uid,Y a reservoir for sealing liquid, and a'pu'mpforroceivingliquid from said reservoir and for dischar ing it throughvsaidchamber to said recepta e.

3. A fluid lcushioning devicecomprising I movable members having-asliding joint therebetween and forming a closed chamber, a packing forthe joint, a liquid recep on cap 80u11 l mechania tacle above saidpacking for supplyingithe 5t same with sealing liquid, a reservoir forsealing liquid located within saidchamber, and a ump actuated by therelative motion of said members for receiving liquid from said reservoirandfor delivering it in a` free streamthroughy.said phamber to saidrcceptacle.l

4. A fluid `cushioning device comprisin relatively mevable membershaving a sli ing` joint therebetweeirand forming a closedchamber, apacking for the sliding oint, a

liquid receptacle above said packing or sup p plying the same withsealing liquid, a reservoir for sealing liquid, a pump mechanicallyconnected to said members and actuated by the relative motion thereoffor receiving liquid Ifrom the reservoir and for deliveringl it in afree stream through said chamber to saidrcce tacle.

5. A uid. cushioning relatively movable ymembers having' a sliding jointtherebetween and forming a closed chamber, a packing for the slidinjoint, va liquid receptacle yabove said pacll( the closed chamber-and apump located within .the chamber and having its parts .y connected tosaid members for i receiving l. delivering chamber to said receptacle.

6. A fluid cushioning device comprising zal imm said reservoir and-for-telescopically arranged relatively movable f members having a -sliding"`oint therebetween and forming'a close ,chamber,` a`

packing for the slidinv joint,`a pump 10'- cated'within the cham randactuated by the relative movement'of said members for y deliverin "afreefstr'eum'fof` sealing .liquid thro'u h t e chamber to the packing,a-guard -cylin er surrounding one of said members' vfor receiving liquide aking past'said pack- 1ng and a valve controllin a port formed insaid-guard cylinderfor ischarging le'all Atlg'u therefrom.. i Y. i,

In testimony whereof, I have. hareuntd V,subscribed my name this 10thday of April, 1913. l

C. W. Meth-iam. l Auna Cronan'rr.

device comprising i I ing for ,supplying the same with sealing liquid, a

reservoir for sealing liquid located within. v

it in ay free stream through the

